A solar-powered airplane designed to fly day and night without fuel or emissions successfully made its first test flight above the Swiss countryside on Wednesday.

　　世界上首架无需燃料可实现昼夜飞行的太阳能飞机——“阳光动力”号本周三在瑞士成功完成首次试飞。

　　The Solar Impulse, which has 12,000 solar cells built into its wings, is a prototype for an aircraft intended to fly around the world without fuel in 2012.

　　阳光动力”号飞机翼铺排了将近12000块太阳能板。正式的“太阳驱动”号预计2012年有望执行无燃料环球飞行任务。